Yeah, a few months ago I went to see Michael Shermer speak at CFI Toronto and he mentioned that Discovery had contacted him to get some information about 2012. He told them "well, it's a bunch of bunk" and they replied "oh we know that, but we're in the business of showing what sells".

They are losing their edge as well though with their show called Head Rush. I don't know the point of it, but it seems all they do is take clips from Mythbusters, and rebroadcast them with maybe 10 minutes of interesting facts mixed in with it.